strdup.c

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- *//* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is the Netscape Portable Runtime (NSPR). * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998-2000 * the Initial Developer. All Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */#include "plstr.h"#include "prmem.h"#include <string.h>
PR_IMPLEMENT(char *)
PL_strdup(const char *s)
{
char *rv;
size_t n;
if( (constchar *)0 == s )
s = "";
n = strlen(s) + 1;
rv = (char *)malloc(n);
if( (char *)0 == rv ) return rv;
(void)memcpy(rv, s, n);
return rv;
}
PR_IMPLEMENT(void)
PL_strfree(char *s)
{
free(s);
}
PR_IMPLEMENT(char *)
PL_strndup(const char *s, PRUint32 max)
{
char *rv;
size_t l;
if( (constchar *)0 == s )
s = "";
l = PL_strnlen(s, max);
rv = (char *)malloc(l+1);
if( (char *)0 == rv ) return rv;
(void)memcpy(rv, s, l);
rv[l] = '\0';
return rv;
}